Spanner-wrench.



P; H. GAVBN. SPANNER WRENCH. I APPLICATION FILED OUT. 8,1908;

PatentedMay 18, 1909.

UNITED TATES PATENT rrrcn.

SPANNE R-WRENCH.

Specification of Letters Patent.

Patented May 18, 1909.

Application filed Gctober 3, 1908. Serial No. 456,782.

1'0 all whom it may concern:

Be it known that I, FRANK H. GAVEN, a citizen of the United States,residing in Philadelphia, Pennsylvania, have invented certainImprovements in Spanner-\Vrenches, of which the following is aspecification.

The object of my invention is to so construct a spanner wrench as tofacilitate the application of the same to a gland, collar, flange, orother machine element which has to be engaged and turned thereby.

In the accompanying drawing Figure l is a perspective view of one formof spanner wrench constructed in accordance with my invention; Fig. 2 isa View of said wrench partly inside elevation and partly in section, andillustrating the manner in which the wrench is intended to be used, andFig. 3 is a perspective View of another form of spanner wrench embodyingcertain features of my invention.

In many classes of machinery portions which have to be manipulated by aspanner wrench are frequently in such locations that it is difiicult toapply and adjust the wrench without careful manipulation, and this isespecially true of motor cars, in which the machinery is usually crowdedinto such a relatively small space, that the proper adjustment of thewrench frequently necessitates the grasping of the same close to thehead. As the use of the wrench is frequently required when the parts areat a very high temperature severe burns have resulted because of thecontact of the hands with heated members of the machine.

Those parts of a machine which have to be manipulated by a spannerwrench are usually collars, flanges, glands, stuffing box followers, orthe like, surrounding a rod or shaft of smaller diameter, and incarrying out my invention I have availed myself of this fact to providethe wrench with a guide member to engage such rod or shaft, and aid inthe proper manipulation of the wrench by directing it to the memberwhich it has to engage.

In Fig. 1 of the drawing, 1 represents an ordinary type of spannerwrench having, at one end, a semi-circular fork into which projects apin 2 for engagement with an opening in the member of the machine whichhas to be turned. To one side of the wrench is secured a plate 3 havingtherein an openended slot 4, of lesser width than the diameter of theforked end of the wrench, the inner end of this slot being preferablysemicircular and concentric with the curved fork. The outer end of theslot is also, by preference, flared slightly so as to facilitate theentrance into the slot of the rod or shaft which is surrounded by thegland, collar or other member of the machine to be engaged by thewrench. When the shaft or rod occupies the slot at it properly centersthe wrench in respect to the member to be engaged, all that then remainsto be done being to raise or lower the wrench until the plate 3 is incontact with said member, whereupon an inward movement of the wrenchwill bring the pin 2 into contact with the periphery of the member, inline with the openings therein, the wrench being then turned until itspin 2 registers with and can be forced into one of said openings. Theseoperations can be readily performed when the wrench is grasped at theend of the handle, thus overcoming all risk of burning the hand, bythrusting it into a mass of heated machinery.

In order to adapt the wrench for use in connection with members ofdifferent thickness and having the openings for the recep tion of thepin of the wrench at difierent distances from their opposite faces, Iprefer to so secure the plate 3 to the wrench that it can be adjustedfrom and toward the face of the same, and thereby vary the distancebetween the pin 2 and the inner or contact face of the plate, one methodof accomplishing this result being to secure the outer end of the plate3 to the handle of the wrench at or near the outer end of the same, andto provide said handle with a threaded opening for the reception of anadjusting screw 5 having a head bearing upon the outer side of the plate3, as shown in Fig. 2. In some cases this may not be necessary, and insuch cases the slotted plate may be rigidly secured to the yoke portionof the wrench, as shown for instance at 3 in Fig. 3, the latter Viewalso illustrating the application of my invention to a somewhatdifferent form of wrench from that illustrated in Figs. 1 and 2.

I claim 1. A spanner wrench having a yoke open at one side and providedon the other side with a guide plate having a slot less in width thanthe yoke.

2. A spanner wrench having a yoke open at one side and provided on theother side with a guide plate having a slot less in Width end and actedupon by a set screw which than the yoke, and having an inner endc0nengages a threaded opening in the Wrench. centric with the latter. 7p In testimony whereof, I have signed my 8. A spanner Wrench having aslotted name to this specification, in the presence of 5 guide plate atits yoke end, said guide plate two subscribing Witnesses.

bein adjustable to vary the dlstance betwee ii the same and the face ofthe Wrench. FRANK OAVEN' 4. A spanner Wrench having a slotted Witnesses:

guide plate at its yoke end, said plate being HAMILTON D. TURNER,

10 secured to the handle of the Wrench at one KATE A. BEADLE.

